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From: "tromey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/91239] gcc generates invalid .debug_macro sections
 (according to lld folks)
Date: Tue, 19 Apr 2022 18:52:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D91239

Tom Tromey <tromey at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
                 CC|                            |tromey at gcc dot gnu.org

--- Comment #2 from Tom Tromey <tromey at gcc dot gnu.org> ---
I separately discovered this problem when debugging an apparent gdb
slowdown, which I tracked down to a pathological .debug_macro section --
but only when I switched to using 'mold' to link.

> So how does a testcase look like?=20
[...]
> Can you possibly share two source files and instructions to reproduce the
> conflicting comdats?

I filed a trivial example (three very short files) with mold:
https://github.com/rui314/mold/issues/438

I'm taking the liberty of moving this out of "WAITING".=